Carbureter.



R. E. KRAUSB.

v GARBURETER.

APPLIGAHON FILED APR. 18. 1911.

Patented J an. 12, 1915.

zznessss OFFICE. j

vRICHARD' E. KnAUsn. OF'CLEVELAND, omo.

CARBURETER.

T all whom it may concern YBe it known that I, RICHARD E. KnAUsE, a subject of. the King of Sweden, residen-t of Cleveland, county of Cuyahoga, and State 5 ofl Chio, have invented a new and useful Improvement in Carbureters, of which the following is a specification, the principle of the invention being herein explained and the fbest mode in which I have contemplated applying that principle, so as to distinguish it'from other inventions. a l

f This invention relates to a carbureter, and more particularly to one in which there is an automatic control of the richness of the explosive mixture through the employment of a single jet construction. As is wellknown, it is necessary that the'explosive mixture -be of a certain predetermined character as regards the proportion of fuel'and air, also that this character is determined by the relation of the area of the discharge opening. of the fuel nozzle to the area of air inlet surrounding 4such nozzle.

The special object of this particular invention is to attain an automatic control ot the character of the explosive mixture in a more economical and efcient. manner.

The said invention consists ofmeans which are. hereinafter fuly described and particularly pointed/out in the claims.

The annexed drawings and the following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of of Fig. l, looking in the direction of thearrows. The'carbureter constructed 1n exemphfy- Specification of Letters Patent.

various 'mechanical forms in which the prin-y ing accord with the present conception comi Patented J an. 12, 1915.1.

Application filed April 18, 1911. Seriall No. 621,784.

nected.- The other chamber A comprises. the carbureting chamber proper, and is in fact the portion of the carbureter as a whole with which this invention is concerned. The chamber A is openwabove and below, and interiorly is fashioned with a plurality of upright diametrically disposed guides A2 havingoverhangingupper portions A for a purpose scan to become apparent. These guides A2 prescribe a substantially cylindrical compartmentl A* most lclearly 'appearing in Fig. 2.

A nozzle-supporting member B is screwed p into the lower open end of the chamberl A', and is provided with a suitable connection 7'0 for the feed-pipe a7. Any approved type of nozzle C is centrally mounted upon the mem ber B and in its upright,positionlis adapted" to communicate with the feed-pipe through said connection.

Superimposed within the cylindrical-compartment A* and loosely and gravitationally resting about the nozzle C and upon the upper surface of the member B, are a plurality of rings I)- having downwardly lprojecting shoulders Vcontiguous to their openings. These rings vary in thickness and` therefore in weight. the heaviest being underneath and provided with the largest opening, wgliI the remainder are progressively lighterand provided with correspondingly openings in similar successive progression, so that thelighter will be uppermost. The

upper ring as shown in the drawing is of lesser diameter than the others, and furthermore is provided with a downwardly eX- tending boss, whereby it may be guided di- Y rectly" by .the nozzle rather than by the guides'Az, as in the'case of the other rings. This upper ring.- which is the lightest, is purposely provided with an opening of very small area, for reasons to be' presently lexplained.` Its smaller diameter is neverthe! less somewhat greater than thev distance from each other of the diametrically opposite overhanging portions A3 of the guides A2, whereby theextent towhich it, and y hence'the remainder of the rings, may be raised by the suction .of the e-nginewhen in operation, .is positively restricted. The upl per open end of the chamber A is in fact an upwardly projecting hollow boss/A5. This constitutes' the discharge outlet from the carbureting chamber. It is controlled by the usual type of manually voperable 110 smaller fj tf l ,.30 "j yair supply is substantially 'shut off during ceive a' set-screw f3.

'bureter ).25

,ii-",iivhen the cranking of "'-menced, only the relatively minute opening throttle valve E, through the agency.I of which the opening may be increased or diminished, as is customary in the art. `The upwardly extending boss vided with two oppositely disposed bosses F, each of which is, in turn, provided with a' laterally disposed iange' having a screw-threaded opening f2 a apted to re- TheV lever e which serves to operate the throttle-valve E is, in accordance with my invention, ,provi withfa laterally extending lug e2, adapted to engage in its upward movement this setscrew 8. -The purposeof this is to make it p'ossib e 'to definitely limit p the extent to which the discharge outlet may be restricted by the valve E. It should be especially noted that the construction permits' the setscrew to be placed on either side, and hence the. lever to be'operated from .either side, in accordance therewith. Furthermore, the lever maybe placed on either side of the boss A, inl case the relative position of the carwith respect to the' other engine parts should so Warrant. Y

VDuring operation, it will be noted that the vengine is comring is afforded for Ithe in the uppermost Consequently the upward passage rof air.

cranking, and prior to the starting, 'of the engine, vandI af correspondingly greater proportion of fuel necessarily throughthenozzle. 'I This at that timeserves lthe exact purpose of aprimer, and

' doing Vconstitutes an additionalfeature of my invention'. Directly the engine has start andthe latterwill be raised l tion of gravity.

ed; and theV suction in the carbureting chamber simultaneously 1ncreased,fthe opening in the .uppermost ring will prove inadequate,

against the acl Thereafter, when it is desired t'o increase the speed of the engine, and the throttle-valve isopened still wider, a greater amount of fuel being thereby caused vrespondingly greater supply of air, is that one which prescribes the amount of fuel rising through the nozzle. -Any further -I lopening of the throttle-valve will lneces- 0991er of this patent may be obtained for sarily produce a similar result to 'the one just described, so that one after the other of the several rings is raised against the action of gravity, beginning, as already stated withv the lightest, which is uppermost, and Ahas the smallest opening. This consequently laces the successive areas of the various air inlet openings of the severalri-ngs into a A5 is prodrawn up in so iow up through the nozzle, the largeropening in the next lower. ring with its corair ter of the explosivev mixture supplied to the vengine cylinders may accordingly be maintained at a point as nearly constant .as may in practice be found feasible `foreco'nomical eiliciency.

`Having fully what I claim and desire to secure by Letters Patent is 1. A carbureter comprising the combination ofv a casing forminga'. carbureting chamber having an air-inlet below vand a" valvecontrolled outlet above for the carbureted air;v a fuel nozzle projectingv into' said air-inletand discharginginto said chamber, and a plurality vof superimposed rings of same diameter, surroundi g said fuel nozzle having shoulders and openings of different size contiguous thereto, rounding said' nozzle, for progressively varying the area of said air-inlet directly as the variation of pressure' at said outlet, whereby the velocityof the air. is maintained between predetermined limits; the' said inlet `forming the sole means of entrance of'air into said chamber.

2. A carbureter comprising a carbureting chamber provided with a fuel nozzle and an' air inlet, and `an outlet for the carbureted air, said. chamber being further provided interiorly with a plurality of diametrically disposed upright guides,and fa plurality of vsuperimposed rings ofy same diameter, surrounding the -fuel nozzle having openings of differentsize, for varying the' area of said air-inlet, and'movable between said Within the chamber for guiding said tubular members and supporting: the same at difi ferent heights. A p l Signed by me, p this 10th dayof April,

'RICHARD n. KRAUsnf 'attested by- CURT B. MUELLER, v WINIFRED WALTZ.

tive cents each, by addressing the Commissioner of Patente,

Washington, D. C.

said openings. sur-- into said chamber, av

plurality of concen-.

described my invention, 

